Your Brain Is a Guessing Machine
Your brain guesses what comes next and then checks; the new talking machines are built on guessing too, which makes them a good mirror but not a twin.
You’ve gone down a staircase in the dark and put your foot down for one more step that wasn’t there. Your whole body jolts. Your heart jumps. For a second you feel cheated by the floor. But the floor was right where it had always been. What went wrong was a guess. Some part of you had already decided there was one more step, and your foot went where the guess told it to go. That jolt is what being wrong feels like from the inside.
This is rule two again. You see your map, not the world. Your brain guesses first and fixes the guess second.
You pick up a carton of milk you think is full, and it’s nearly empty, and your arm flies up. Your hand had guessed the weight before it touched the carton. You finish a friend’s sentence before they do. You sing the wrong words to a song for years. Each time, your brain wasn’t waiting to see what was there. It was a step ahead, placing a bet.
Your phone does a small version of this. Type “see you” and it offers “soon” or “tomorrow.” It’s guessing your next word from all the words it has seen. The big chat programs that some people fear grew out of the same idea, made far larger. They learned by reading a huge pile of writing and guessing the next word, over and over, and getting nudged each time they guessed wrong.
So there is a real likeness. The shared idea is guessing what comes next. That’s all. A chat program guesses words. Your brain guesses the world: the stair, the weight of the milk, the look on a face. And most of a chat program’s learning is done before you ever use it. Yours never stops. With every step you take, your brain checks its guess against your feet. So I think of these machines as a mirror, not a twin. Watching one guess shows you how much of your own life runs on guessing too.
Three things follow from this.
First, most of what you see is a guess that hasn’t been caught yet. When the guess is right, which is most of the time, you never notice. You only find out on the dark stairs. Remember that when you feel very sure of something. Feeling sure is what a guess feels like before the world has answered it.
Second, being wrong is how a guesser learns. The jolt on the stairs is the moment your map gets fixed. Next time, your foot feels for the step. That’s rule five working inside your body: the world gets the last word, and a surprise is how you hear it. Both kinds of guessers can be wrong and sound completely sure. A chat program will sometimes state a made-up fact in a calm voice. You’ve sung the wrong words at the top of your lungs. The fix is the same for both. Check.
Third, a guesser can only guess from what it’s been fed. A machine trained on nothing but angry writing would guess angry words. Your brain has the same limit. Go to the same places, see the same faces and read the same things, and your guesses get very sure and very narrow. That’s rule three: whatever you feed, grows, and your guesses are no different. Want better ones? Feed your brain a wider world.
Try this for a week.
Every time something surprises you, even a little, make a mark on a card or in your phone. The bus came early. A friend said no. The soup was salty. Each mark is a guess your brain made and the world fixed. At the end of each day, count the marks. A day with no marks was a day so familiar that your guesser had nothing to learn. After a day like that, feed your brain something it can’t predict. Walk a new street. Order the dish you’ve never tried. Ask someone a question you don’t know the answer to.
One line to remember
A surprise is your map getting fixed for free.
